Combination instrument



A. B. SMITH.

COMBINATION INSTRUMENT.

APPLICATION FILED OCT. I6, I9I9.

Patented N ov. V2,*1920.

PATENT OFFICE.

`ALFRED B. SMITH, OF ABERDEEN, WASHINGTON.

COMBNATION INSTRUMENT.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Application filed @etober 1G, 1919.- Serial No. 330,947.

T 0 @ZZ whom t may concern.'

it known that I, Arai-nun B. SMiTI-r, a citizen of the United States,residing at Aberdeen, in the county of Grays Harbor and State ofWashington, have invented certain new and useful lmprovements inCombination nstruments; and l do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to malte and use thesaine.

This invention relates to an improved combination instrument of thepencil type and the principal object of the invention is to provide acombination device of the character described which will constitute acoinpass and will include a pencil and steel marker which may be usedfor marking where pencil would not readily show, the steel marker beingso constructed and mounted that it will form the pivot point when thedevice is used as a compass.

Another object of theV invention is to provide improved means forlocking the steel blade in an extended position thereby preventing theblade from moving out of the desired position when in use as a marker.

Another object of the invention is to so construct this device that thesleeve will be held against rotary movement when in a locked position,thus giving additional strength.

Another object of the invention is so construct the device that theparts forming the samecan not easily come apart, thereby producing astrong and durable device.

This invention is illustrated in the accompanying drawings, wherein:

Figure l is a view showing the improved device in side elevation withthe marking blade in the folded position and thedevice ready for use asa compass.

Fig. 2 is a side elevation showing the marking blade in the extendedposition for use. c

Fig. 3 is a longitudinal sectional view through the arm carrying themarking blade with the blade extended and loclred.

Fig. l is a view similar to Fig. 3 with the blade in the foldedposition.

Fig. 5 isa perspective view of the locking sleeve removed from the armcarrying the sleeve.

This device is in the form of a compass having arms 10 and 1l which areformed of sheet metal blanks bent to provide the tubular arms havingpivot ears l2 and 13 extending therefrom and positioned in overlappingrelation with the pivot pin lelextending through the ears to pivotallyconnect the arms. The pencil l5 is inserted in the tubular arm l0 andwill be held therein by frictional engagement. The arm l1 is providedupon its outer side and adjacent its free end with a slot 1G to receivethe resilient locking tongue l? carried by the slide i8 and ei:-

tending through a. slot 19 formed in the slide. rlhis slide is furtherprovided with tongues which extend beyond the ends of the arms ll whenthe slide is moved downwardly and are adapted to retain the steel markerblade in the extended position as will be hereinafter brought out.

A core 2l is positioned in the a in 1l and rotatably mounted therein andis provided adjacent its lowerV end with a cutout or pocket 22 whichregisters with the slot 16 and receives .the tongue 17 thus permittingthe core to beheld against rotary movement when the marker is intheextended position. This core extends-beyond the free end of the arm lland carries a head 23 which is similar `to the end portion of a penknife and carries a blade 2lwhich is pivotally mounted and is providedwith a spur 25 acting as a pivot point for the compass whenthe markingblade 2d is in the folded position. n spring 26 similar to the spring ofa pen knife is carried by this core and extends into the head to enga-gethe heel of the blade and retain the blade in an adjusted position. Froman inspection of the drawings it will be evident that the tongues 20 maylit into the head beneath the blade and against the outer face of thespring 26 when the marker blade is extended as shown in Fig. 2, therebysecurely locking the core against rotary movement and preventing theblade from turning from the desired position when the device is in useas a marker.

lWhen the device is used as a compass, the core will be rotated and themarker blade turned inwardly thus extending .tl e spur to provide thepivot point for the compass. llflhen the device is not in use, it willbe left in this position and the arms can then be brought together andthe device placed in the pocket without any danger of the sharpened endof the marking blade catching and tearing the pocket. wWhen the deviceis used as a marker for markingwet wood and other substances whichcouldrnot be readily marked with a lead pencil, the blade will be swungoutwardly and the core then rotated so that the blade will extend tromthe outer side oi the arm` 11. The sleeve will then be moved downwardlyso that the tongues 20 engage the head and the blade will then besecurely held in the extended position thus permitting it to be used asa marker. W hen used in this manner,- the two arms will be broughttogether thus providing a good handle. rlhis device can be used as anordinary pencil when in the folded position and Afurther. when in thisposition can be used as a pair ot dividers as well as beingused as acompass. There has thereforebeen provided a device which will be veryconvenient for use by carpenters or others having use for similarinstruments. It should be further noted that this device maybe set withthe arms apart a desired distance and moved along a board with the freeend of arm ll engaging the side edge ofthe board and the'pencilextending across the tace of the board and making a scribe line as thedevice is moved.

What is claimed is:

l. A device of the character described comprising tubular arms pivotallyconnected at their upper ends, a core rotatably mounted in one of saidarms, a head connected withsaid core and positioned beyond the outerends'ot the arms, a marking blade pivotally connected with the head formovement tromV a position at substantially right angles to thearms to aposition substantially parallel to the arms with its tree end extendingtoward the pivoted ends ot the arms, a lealZ spring engaging the bladeto retain the saine in an adjusted position, said arm being providedwith an opening and the core with a pocket to register with the openingsof the arm, a sleeve slidably mounted upon the arm and having itslowerend provided with tongues for engaging the head to retain the headagainst rotation when the marking blade is in anextended position atsubstantially right angles to the arm, and a resilient tongue carried bythe sleeve for passing through the registering opening and pocket toretain the sleeve against rotation when the blade isin the extendedposition.

2. A device et the character described comprising tubular arms pivotallyconnected at their upper ends, a core rotatably mounted in one of saidarms and extending beyond the lower end thereof, ahead carried by thecore and positioned beyond the lower end of the arm, marking bladehaving a heel pivotally connected with the head,

the heel being provided with a spur for constituting pivot point whenthe blade is in a folded position, a sleeve slidably mounted upon thearm, and tongues carried by the sleeve and extending to engage the headfor locking the head against rotary movement when the blade is in anextended position.

3. A device of the character described comprising arms pivotallyconnected at their upper ends, one of said arms being hollow, a corerotatably mounted in the hollow arm, na head carried by the core, amarking blade having a heel pivotally connected with the head andprovided with a spur extension constituting a pivot point when themarking blade is in a folded position, a locking sleeve slidably mountedupon the hollow arm tor engaging the head to retain the core againstrotarymovement whenthe blade is in an extended position, and means torreleasably locking the sleeve against rotary movement upon the hollowarm when in engagement with the head.

t. A device of tie character described comprising arms pivotallyconnected at their upper ends, one ot said arms being hollow, a corerotatably mounted in the hollow arm, a marking blade pivotally connectedwith the rotary core tor movement from a folded to an extended position,and means carried by the hollow `arm for engaging the head toreleasably` retain the core against rotary movement when the markingblade is in an extended position.

5. A device of the character-described comprising armspivotallyconnected, one of said arms being adapted to carry a renewablemarking implement, a blade carrier rotatably connected with the secondarm, a marking blade pivotally connected .with the blade carrier andhaving a spur extension constituting a pivot point Vfor Vthe device whenthe marking blade is in a folded position, and means for releasablyretaining the blade carrier against rotary movement.

6. ln a device ot the character described, a pair o1c pivoted members,one of said members carrying a marking element, and a pivoted spurpivotally carried by the other pivoted member and capable of beingdisposed parallel to said member or at anV angle thereto and having anextension forming a marking arm when the spur is extended at an angle tothe pivoted member.

i". In a device of the character described, a pair of pivoted members,one of said members carrying a marking element, and a spur pivotallyconnected with `the other pivoted member and capable of being disposedparallel to said member or at an angle thereto, the spur when in thefirst mentioned position constituting a centering point for the markingelement, and the spur having an extension forming a Vmarking elementwhen the spur is in the latter position.

In testimonywhereof l affix my signatur in presence of two witnesses.

ALFRED B. SMITH. Witnesses: A

YGLENN G. Eoirnnr, GIBsoN.

